Physics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9719471h&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A12, p. 19,471-19,488.
Physics
14
Auroral Zones, Instrument Compensation, Ionospheric Ion Density, Magnetic Field Configurations, Multistatic Radar, Radar Echoes, Refracted Waves, E Region, Line Of Sight, Plasma Waves, Very High Frequencies
Scientific paper
The aspect angle effect on the character of radio auroral backscatter was investigated using data taken in central Canada with the 48.5 MHz Bistatic Auroral Radar System, which permits simultaneous and coincident measurements of the backscatter power at two different aspect angles and flow angles. Only the events that were free of particle precipitation were considered. After correcting for the effect of refraction, it was found that a true large aspect angle backscatter occurs for magnetic aspect angles exceeding 6 deg. At a 3-deg aspect angle, the backscatter power decreased with increasing aspect angle by about 13 dB/deg (the aspect sensitivity), similar to what has been found in earlier studies at UHF.
Hall Garrett
Moorcroft D. R.
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